Dry-pipe valve.



'PATENTBD JUNE 1a.' 1,907,

' No. 857,276. i

J. R. HAMILTON.

DRY PIPE VALVE.

APPLICATION FILED FEB. 8, 1906.

ATTORNEYS rn: novum ruin-go.. 'min-ani, n. c;

JOHN R. HAMILTON, OF MOUNT KISOO,

FAOTURERS AUTOMATIC SPRINKLER A CORPORATION OF NEW YORK.

NEW YORK, ASSIGNOR TO MANU- DRY-PIPE VALVE.

.Specification of Letters Patent.

Patented June 18, 1907.

Application led February 6, 1906. Serial No. 299,742.

T0 a/ZZ whom it muy concern: f Be it known that I, JOHN R. HAMILTON, a citizen of the United States, and a resident of Mount Kisco, in the county of Westchester and State of New York, have invented certain new and useful Improvements in Dry-Pipe Valves, of which the following is a specification taken in connection with the accompanying drawings, which form a part of the same. This invention relates to automatic sprinkler devices and relates especially to dry pipe valves used in automatic sprinkler systems. e In the accompanying drawings showing an illustrative form of this invention and in which the same reference numeral refers to similar parts in the several iigures, Figure 1 is a side view partly in section showing the valve in set position. Fig. 2 is an enlarged view oi? parts of the same. Fig. 3 is a top view. Fig. 4 is a side sectional view of these details.

In the illustrative embodiment of this invention shown in the drawings, the casing 1 14 is adapted` to be connected with an inlet pipe v l and supply pipe leading to the distributing system. This inlet pipe 68 is shown in the position in which the device would be used and the supply pipe is also indicated in operative position, this supply pipe leading to a distributing system provided with sprinkler heads or the like, as is well known in this art and from which the air pipe 69 descends. The water valve 79 is indicated as arranged within the casing and as iirmly seated so as to close the opening from the inlet pipe into the chamber 77 of the casing. This valve may be swivelingly mounted on the valve rod 81 by the ball joint 89, if desired, and as indicated the valve rod may be provided with the plug of conical form to firmly seat within the corresponding hole in the casing through which the valve rod loosely extends. The valve chamber 77 within this casing may be drained by the pipe S7 and valve.88 so as to be emptied and kept clear of any water. The check valve 7 8 may be mounted o n the pivoted valve arm 76 to normally close the top of this chamber 77 and prevent the escape of air pressure from the supply pipe 65 and distributing system. A drain valve 75 may be provided and also the test valve 67 in the pipe 66.

The air pipe 69 connects with the pipe 94 e which is provided with the drain valve 96 and drain pipe 97 and also with the test cockv 95. In this way the air pipe connects with the air chamber 115 which may be provided with the gage 70 and in which is mounted the air valve 72 secured upon the stem 7 3, the upper portion 71 of this stem which may be suitably guided in any desired way maintaining the alinement of the valve and stem. This air valve and stem cooperate with the releasable holding devices which normally maintain the water valve in closed position as indicated, but which in the event of fire release this valve and admit water to the chamber 77 and distributing system. The rod 81 may be held in position by a'suitable detent 82, the upper end of which engages as indicated a notch in the support 99, while the lower end of this detent is engaged by a link or catch 83, the other end of which is held by the weight lever which swings about the pivot 84. The outer end of this weight lever is supported by the lower end 93 of the link 91 which may also be weighted as indicated, the hook 92 on the upper end of this link preferably engaging an arm 108 on the rock lever `The other end of this rock lever may be provided, as indicated,with an enlarged head 104 and with the socket 112 in. which the stem 73 of the air valve is seated. As it is sometimes desirable to have the valve stem and hook on the link in line with the support v99as they are constructed in some existing equipment, the rock lever may be readily mounted in an oblique position by providing' the yokes 109, 116 and 11, preferably of V- sectioned material, so that they project in opposite directions from the brackets 107 and 110 by which they may be readily secured to the support 99. The alining lug 106 is preferably formed in the bracket 110 and a coperating seat may be formed'in the head below the socket 112 or other means may cooperate with lthe lever to prevent accidental displacement of the valve stem. The enlarged head on the rock lever tends to prevent the irregular resetting of the valve aiterit has operated and the partially invclosed socket 112 in which the stem engages is very effective inconnection with the alining lug and seat or other means in preventing the resetting of the water valve and releasable holding devices after their emergencyopera- COMPANY, or NEW YORK, N. Y.,

.giving an valve in saidk casing to control the inlet tion until the air pipe 69 has been completely drained of water and the air valve 72 raised so as to place the stem 73 in tliesocket in the proper' inamier` y The shape of the parts are such asto minimize corrosion and give reliable emergency operation of the device in `case of fire -under which conditions, as is well understood, the pressure in the air pipe is decreased to such an extent that the air valve is raised by the weighted levers and links, the rock lever is rotated and' the hook 92 entirely released therefrom, so thatthe link and lever 9() fall, forcing the electric-switch plug 100 inward against the action oli the spring 101 so that the contacts 85 are electrically connected, appropriate alarm signal over the cable 86. The link 83 and pin 82 are also released allowing the valve rod 81 to move outward under the pressure of water on ythe valve 79 so that water canreadily get access to the distributing system.

Having described this invention in conF nection with an illustrative embodiment thereof, to the details of which l do not desire to be limited, what l claim as new and what l desire to secure by Letters Patent is set forth inthe` appended claims` 1. `ln dry pipe valves, a valve casingfor connection with an inletpipe,a water valve in'said casing provided with `a `protruding valve rod, a check valve in said casing to control the outlet to supplypipe and distributing system, an air chamber to beconnected through an air pipe with said distributing system, an air valve in said chamberprovided y with a protruding stem, a support, brackets secured to said support and provided with yokes projecting on opposite sides of said support, a rock lever having an arm and an enlarged head provided with a socket and obliquely mounted above said ysupport in said yokes, an alining` lug on said bracket below said valve stein and releasable holding.

devices engaging said valve rod` and lsaid arm. 2. ln dry `pipe valves, a casing, a water water thereto, an air chamber to be connected of l with a distributing system, an air valve in` lsaid chamber and vprovided with a stem, support, brackets secured to said supporti and provided with yokes projecting on oppo` site sides ci said support, a rock lever having an arm and a head provided with a socket and obliquely mounted above saidisupport ini said yokes, stem to engage said lan alining lug below said valve head and releasable hold-` ing devices engaging said water valve andL said arm.

3. `1n dry pipe valves, a valve casing, a,

`watervalvein said casing, an air chamber to be connected toa distributing system, an l air valve in said chamber provided `with aI stem," a support, brackets provided 'with'.

yokes secured to said support, a rock lever having a head provided with a socket mounted iii saidyokes, an aiming lug below said valve stem and releasable holding devicesbetween said water valve and said rocklever. 4. In dry vpipe valves, a casing, a valve, a chamber, a stem protruding from said chame `ber and controlled bythe pressure lwithin it, `a support, brackets secured to said support and provided with yokes projecting on oppo- *site sides of said support, a rock leverfhaving an enlarged -head provided with a socket and obliquely mounted above said support in said yokes, an alining lug engaging'saidhead and located below'said stem'and releasable :holding devices between said valve fand said rock lever. f

5. In'drypipe valves, a valve casing, avalve within said casing, a chamber, a stem protruding from saidchamber and controlled by `the `pressure within it, asupport below-said stem,

brackets securedto said support and `provi ded with yokes projecting on opposite sides of said support and releasable holding devices en gaging `said lvalve and, having a hook `normally substantiallyinline with saidsupport, a rock leverhaviiig an arm and a headpro- `vided ywitlia socketon tlie'opposite side from said arm, the said lever beingobliquely mounted above said support insaid yokes `and an alininglug engaging saidlever to preventnthe irregular resetting of said valve. i

6. In automatic valves, a valve, a chainber` having Aa stem protruding therefrom and rcontrolledby the pressure therein, a support in linewith said stem, releasable holding devices for said valve comprising a member normallyin line `with said support, brackets secured *to said support and `provided `with yokes projecting lon opposite sides of said support, `a vrock lever having an arm foren-V .gagement `with said member and .provided with `a socket on .the other side from said arm, said leverbeing obliquely mounted with respect `to said `support in said yokes, and

means `to ,prevent 'the irregular 4resetting of said valvelandllever.

`7. A4ln automatic valves, achairiber. a stem protruding from said chamber aiidcoiitrolled bythe pressure therein, said stem'being sub- -stantially in Aline with said support, `releasable valve holding devices having a member nor 'mally in line with said support, a rock lever having an arm to be engaged by said member and a socket on the other side ofs-aidlever to engage said stem, said `lever being obliquely mounted with respect to said support and provided with means to iprevent its irregular resetting.

8. ln automatic valves, a` chamber, a stem `protrudingfrom said chamber andI controlled ICO IIO

y the pressure therein,releasable valveholding devices, a rocklleverlhaving an elongated rock shalt and provided with a member engaging said devices, and 'also provided with an enlarged head having a socketior engaging with said stem and an alining lug engaging said lever to prevent its irregular resetting.

9. In automatic valves, a chamber, a member controlled by the pressure in said chamber, releasable valve holding devices, a rock lever having an elongated rock shaft and engaging said devices, and provided With a laterally extending socket for engagement with said member, and means to prevent the irregular re-setting of said lever.

10. In automatic valves, a valve casing, a

valve in said casing, an air chamber, a stem controlled by the pressure in said chamber, a rock lever having an elongated rock shaft revolubly mounted, and having a head provided With a laterally located socket to be engaged by said stem to prevent irregular resetting, and releasable holding devices between said valve and said rock lever.

JOHN R. HAMILTON. Witnesses:

HARRY L. DUNCAN, JEssIE B. KAY. 

